In this tutorial we install Nginx, ModSecurity and then connect them together. To give some context ModSecurity is a open source firewall which could be configured with any HTTP server. In this tutorial we install it along with the Nginx web server.

Checking disk space is an important task in Linux based machines because we may run heavy data intensive tasks that creates logs and without proper log rotation the disk will be filled up in just couple of days. To make sure we handle all the log rotation properly it is mandatory to check the space available in the disk at any given point in time.

Enabling subject information in log storage will help administrators to sort the mails send based on the subject using grep command. In this micro article, we explain a quick 4 steps to enable this.

Depending on the OS the command varies. mktemp and tempfile are the commands used in the Bash script to create temporary file - it is easy, readily available and simple to use.

Setting up log rotate and monitoring the files is mandatory to avoid running out of the disk space. Log rotate is a linux service that helps us to safeguard from running out of the disk space.Logs from web servers and many different software applications are the reason why we run out of the disk space. When we deploy software applications having an observability layer is crucial to understand what is happening in the application but at an expense of disk storage. In this article we explore the ways log rotate can help us is rotating the logs we won’t run out of the disk space.